spi: xlp: Enable SPI driver for Broadcom Vulcan ARM64

- Vulcan spi controller is compatible with netlogic,xlp832-spi.
- Add depends on ARCH_VULCAN to Kconfig to enable spi controller
  driver for Broadcom Vulcan ARM64 SoCs.

Signed-off-by: Kamlakant Patel <kamlakant.patel@broadcom.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
1 file changed